linix cnc retrofit using 2 mesa 5i25

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14 Nov 2019 17:11 #150379 by kavindu1
linix cnc retrofit using 2 mesa 5i25 was created by kavindu1
I'm trying retrofit cnc miling machine using two 5125 mesa



one 5i25 with 7i77 (5i25+7i77) as mesa 0
I connect 7i77 to analog servo as Z axis . i configure pncconf page like below





and other 5i25 card use as step and direction as mesa 1 X axis and Y axis like below




without err linux cnx is open and i enable drives through the linux cnc

but the problem is my Z motor rotate slowly . Im going to PID tune my Z axis i put some value to my P gain (P=1.1 / P=3/ P=10 / P=20 ) like that , nothing happen motor moving slowly . i think values are not get in to the system.

can i fix that?
plz i expect your help
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14 Nov 2019 17:16 #150380 by PCW
Replied by PCW on topic linix cnc retrofit using 2 mesa 5i25
1. Can you post your hal/ini files
2. Velocity mode servo tuning is 99% dependent on FF1 see

gnipsel.com/linuxcnc/tuning/servo.html

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19 Nov 2019 12:40 #150635 by andypugh
Replied by andypugh on topic linix cnc retrofit using 2 mesa 5i25

I'm trying retrofit cnc miling machine using two 5125 mesa


You are very unlikely to need two 5i25 cards in one machine. However the drivers can support that if required.

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